How popular is Jacki?

Jacki is a somewhat prominent first name for females (#2317 out of 4276, Top 54%) but an unusual last name for all people. (2000 U.S. Demographics)

Jacki entered the list in 1940-1949 and reached its peak position of #986 in the U.S. in the 1960s, but is not ranked at the moment. (2015 U.S. SSA Records)

Which version is better?

with its source forms and related girl names. Popular alternative forms of Jacki appearing in the Top 2000 are Jackie, Jacklyn, Jaclyn(#1445 a year ago), Jacque, Jacqueline(#258) and Jacquie. These forms of Jacki were favored by parents 35 years ago (adoption of 0.5%) and are now much less widespread (adoption 0.1%, down 83%), with forms such as Jacqueline becoming less stylish.